Bearing seal



Patented Aug. 6, 1935 UNITED STATES PATENT OFFICE The Fafnir Bearing Company, New Britain,

Conn., a. corporation of Connecticut Application December 9, 1932, Serial N0. 646,369

6 Claims.

My invention relates to a. bearing device and more particularly to seal means.

In various bearing seals heretofore in use, there is considerable likelihood that the seals may pop 5 out or become disengaged irom the ring carrying the seal.

It is an object of my invention, therefore, to provide a bearing seal which in certain applications may be arranged against any possibility cf 1 becoming disengaged from its bearing fing.

It is a further object to provide a generally improved and simplified bearing seal.

The drawing shows, for illustrative purposes only, one embodiment of the invention and illustrates a bearing in quarter section. The particu- 1ar embodiment illustrates a rocker arm construction for engines, though the invention is, 01 course, not limited to that particular application.

indicates a rocker arm or the like which is in two parts and. may be assembled endwise over the outer bearing ring 6 oi an anti-friction bearing, including the unter ring 6 and inner ring I, and interposed anti-friction bearing members such asballs 8. The inner ring I, which in the preferred form is langer than the unter ring 6 and extends axially beyond each edge thereof, may be carried by a holt or shaft 9, which in the present embodiment would be non-rotatable in use. The shaft 9 is suitably supported at the 30 ends by means not shown which may constitute part of a frame or support, side portions III-III of which are illustrated.

The bearing shown is sealed at each side by means of duplicate seals illustrative cf the inven- 35 tion. In that particular form shown, there is a. sheet metal sleeve II preferably tightly fitting over the face 0f the inner ring I and is provided with an outwardly radially extending fiange I2 between the inner and outer bearing rings. The 40 sleeve I I is also provided at its outer end with an inwardly radially extending fiange I3 abutting the edge face 0f the inner ring 'I. A second and shorter sleeve I4 fits tightly an the sleeve II and is provided between the biearing rings with a 45 radially outwardly extending flange I5 spaced from the flange I2 and forming therewith a holding space or recess for a seal ring such as the felt washer I6. The felt washer is thus supported between the flanges I2 and I5 and rides upon the '50 outer surface of the sleeve II and the inner face of the unter ring 6. The sleeve I 4 is preferably provided on its outer end with a radially inwardly extending flange I'I extending over the flange I3.

= As a. seal device, the above described seal is ICI. 286-5) .very eflective und is exceedingly cheap t'0 manufacture anti simple to assemble. In such applications where the particular construction admits, a suitable support III abuts the flange suchas I-I so that there can be no possibility of the seal becoming displaced from the bearing. Furthermore, in the illustrated embodiment, the rocker arm 5 has inwardly directed flanges I8--I 8 which would prevent accidental outward displacement ot the seal.

While the invention has been described in considerable detail and one application illustrated, lt is to be understood that changes ma'y be made within the scope of the invention as deflned in the appended claims.

I claim:

1. In an anti-Irlction bearing comprising inner and outer bearing rings and anti-friction bearing members interposed between said bearing rings, seal ineans Ior sealing the space between said bearing rings and comprlsing a sleeve fitting the face of one of said rings and extending inwardly between the opposed faces of said rings, said sleeve having a radially extending flange thereon, a. second sleeve fitting said first ment-ioned sleeve am). having a radially extending flange thereon spaced from said flrst mentioned flange, a seal ring interposed between said radial flanges and b'etween one cf said sleeves anal the face 01 the opposite bearing ring, said sleeves ab the ends opposite said flrst mentioned fianges having radial flanges extending over the edge face of one of said rings.

2. In an anti-friction bearing cpmprising inner and outer bearlng rings with iigterposed antifriction bear ing members, seal meanacomprising a sleeve member having oppositely extending radial flanges at opposite ends thereof, one of said flanges being interposed between the bearing rings while the other 01 said flangesextends over the edge face 013 one cf said rings, said sleeve fitting on the bearing face 015 one of said rings, a seal ring positioned by said flange between said. bearing rings, and means for holding said seal ring in place.

3. In an anti-Iriction bearing comprising inner and outer bearing rings with interposed antifriction bearing members, said inner ring beim; o1 greater width than said outer ring, a bearing seal including a pa.rt interposed between the op-: posed bearing 1'aces o! said rings for sealing the radial space therebetween, said seal including a part extending over the outer edge face of said inner ring, and means abutting said part to hold said seal in place.

4. In an anti-friction bearing comp'rising inner and outer bearing rings with interposed. antifriction bearing members, seal means for sea1- ing the space between said bearing rings and comprising a 'plurality of members in the space between opposed bearing faces of said bearing rings, one of said members serving to bodily carry all of the other members of said seal means, one of said members having part extending over the edge face and over the bearing face of one of said bearing rings to position said seal means on said ring.

5. In an anti-friction bearing comprising inner and outer bearing rings with interposed antifriction bearing members, seal means carried by one of said rings and comprising a pair of concentric interfitting sleeves carried by one of said rings on the bearing face thereof, one of said sleeves having a radial flange extending over th e outer edge face of the ring carrying the Same, one of said sleeves having a radial flange a1; the inner end thereof and in the space between opposed bearing faces of said bearing rings.

6. In an anti-friction bearing comprising inner and outer bearing rings with interposed antifriction bearing members, 3 seal member comprising a sleeve fitting the outer bearing face of said inner fing, an inwardly directed flange on said sleeve and abutting the edge face of said inner ring, said sleeve extending into the space between said rings and having an outwardly directed fiange extending into close proximity to the bearing face of said outer bearing ring.

JOHN W. SMI'III. 

